yashsingh1/xdaforums huggingface dataset:
[Galaxy Note 4 Q&A, Help & Troubleshooting] pexza:
Hi Everyone

I'm sorry for my method. On Cm13 I can't copy /efs to internal storage, it's automatic reboot everytime. But the solution to get /efs from Cm13 for me is backup Efs from TWRP and extract it with Ext4Unpacker. Only backup from Cm13 can use Ext4Unpacker for extract and used in my method.

Sorry again, I think I can get /efs from Cm13 by copy it but when I try it again it fail so I used TWRP backup and extract it and it work.
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
you must be doing something wrong, cuz it's working here.
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
Can you give me the screenshot how to extract it ?
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
select the folder, right click on it and press 'Extract'
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
It's stopped working, im using windows 10
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
That's the stock I presume?

Use the cm backup not the stock
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
Got this message now, efs1.emmc.win from CM13
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
Strange. Maybe backup folder's name is too long, or try to run as administrator
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
I'll ready run as admin but still didnt work, btw what is your windows?
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
Windows 10.

Try running in computability mode Windows 7
[Galaxy Note 4 Q&A, Help & Troubleshooting] ahmd gomaa:
hey there,

i have read all the posts in this thread

WHAT IS THE EFFECTIVE METHOD TO GO BACK TO STOCK ??!!
[Galaxy Note 4 Q&A, Help & Troubleshooting] Abduldul:
Hi there,

I think the best method or the best solution for all those note 4 users whom installed cm13 and got stuck with boot loop when going back to stock rom is to wait till Samsung releases MM 6.0 "Marshmallow" so as their problem will be solved - Marshmallow is proposed to be released for Note 4 by the end of 1st quarter of this year.
[Galaxy Note 4 Q&A, Help & Troubleshooting] arunkrishnanr:
Working working working!!!!!

BRO!!!!!!!!! YOU ARE A LIFE SAVER!!!!!! AFTER DAYS OF TRYING, FINALLY I GOT MY NETWORK BACK. GUYS!! THIS IS THE PROPER SOLUTION!! A LITTLE CORRECTION IS THERE, ITS "nv_data.bin.bak" you misspelled it a little. But Im so thankful to you!! Thank you bro! :) :good:
[Galaxy Note 4 Q&A, Help & Troubleshooting] ahmd gomaa:
Fortunately This thread has the perfect solution

YES YES YES SOLVED SOLVED SOLVED

BACK TO STOCK AGAIN

---------- Post added at 11:06 AM ---------- Previous post was at 11:01 AM ----------

Thanks thanks thanks

Followed these steps and i am back to stock again registered and every thing is working???

** **my phone didn't reboot automatically i had to reboot manually???
[Galaxy Note 4 Q&A, Help & Troubleshooting] arunkrishnanr:
I explained complete 100% successful steps here. Trust me, it's working!!

http://xdaforums.com/note-4/help/n910c-to-stock-rom-cm13-t3321132
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
i have an error when i format efs folder "invalid argument" can you help me out
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
how did you manage to copy efs file? i tried copy but my phone rebooted, pls help
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Finally i've managed to downgrade to lollipop.

For those who having errors in EFS Professional when you try to erase the efs partition, you MUST follow another way to format (else you'll not be able downgrade).

What i did and worked perfectly (i lost my imei but i have kept a backup):

1) BACKUP YOUR IMEI (like OP said, i've also kept a backup with the efs prof tool also)

2) Boot to TWRP (My version is 2.8.7.0)

3) Select Advanced and terminal command

4) Just select the / directory

5) format your efs by giving the follow command: mke2fs /dev/block/mmcblk0p3

6) Reboot to download mode and flash your stock firmware based on your baseband (mine was COJ5), follow the OP guide, including the pit file and repartition checked.

7) Let it reboot when odin finish, you are on lollipop now. (If you get boot loop again, try factory reset via stock recovery)

8) Flash cf-root with odin and TWRP as you always do.

9) Restore your IMEI and have fun :)
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
If something goes wrong can i just restore to my back up rom cm13?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Yes, i've actually booted to cm13 after formatting efs partition just to check the network.
[Galaxy Note 4 Q&A, Help & Troubleshooting] echodarko:
Mine always stuck on boot.img while flash using Odin. How to fix it?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Are you sure you'r flashing the proper firmware? Make sure it matches with your current baseband. Also check your adb drivers.
[Galaxy Note 4 Q&A, Help & Troubleshooting] echodarko:
ADB Driver already installed properly

Mine is N910H and flash with this one N910HXXU2COJ4_N910HOLB2COJ2_N910HXXU1COJ2_HOME.tar.md5

Correct or not?
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
Close application in the taskbar maybe something is interrupting with the flash, i used to encounter this error before until i realize that usb protection is interrupting the flash process, i just exit that app and all is good. Hope this helps
[Galaxy Note 4 Q&A, Help & Troubleshooting] echodarko:
I can flash TWRP using Odin but failed when flash full ROM.
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
Try other stock rom for your device model
[Galaxy Note 4 Q&A, Help & Troubleshooting] echodarko:
Solved... I change USB Cable :)

Already become Stock ROM 5.1.1 buat Always show Emergency Call Only.
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
Where did you find this solution?
[Galaxy Note 4 Q&A, Help & Troubleshooting] echodarko:
YES!!! Finally can go back to STOCK ROM with normal Netwok.... Very Happy... !!!

Thx All...
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
How to input the command? I see the root directory, how to do the command? I press select at the bottom right and just type in the command you gave? Pls help
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Yes
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
after putting the command and pressing go it says "not found"
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
not found of what? You probably typed wrong the directory, make sure you type mmcblk0p3 (with ZERO) and not mmcblkop3.

Try to type just "mke2fs", if it prints not found then you probably have old twrp version. Mine is 2.8.7
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
i have twrp 2870 i've type the correct letters mario mario charlie bravo lima karla 0(zero) pakistan 3, if i only type mke2fs it gives some codes.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
You missed the "c". Also try to type just mke2fs as i told you, if it says not found then try mkfs.f2fs /dev/block/mmcblk0p3
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
i type mke2fs and it gives codes
[Galaxy Note 4 Q&A, Help & Troubleshooting] echodarko:
I followed this instructions

"STEPS:

STEP1: Through TWRP, make a full backup; then copy this backup ( you should find it in the folder /TWRP/BACKUPS/(some no.s)/(your backup name) in your phone's internal storage ) to your computer, rename the backup "6.0". This backup has an EFS folder which isn't compatible with stocks lower than 6.0, but its IMEI is the right one of your phone (keep this in mind).

STEP2: a- In your phone - rooted and having busybox installed - apply USB-Debugging and grant root access to adb (for CM13 Users, it's a feature you can find in Developer options settings)

b- Connect your phone to the computer, then open EFS Professional ( you should receive a msgbox in your phone; check "Always allow this computer"; then click "OK"or whatever..... )

TIP: if you face a problem opening EFS-Prof., try restarting it, if not solved, make sure that: *You allowed the computer (msgbox of the phone)// **Your device is rooted// ***Your device have busybox Pro fully installed.

c- When EFS-Pro loads, choose the 3rd tab "Samsung tools" , surf to "other tools" and choose "Format EFS Folder" then click "Execute"

TIP: If a msgbox appears saying that permission is denied, it doesn't matter at all, only click "Execute" again, it'll tell you "Can't find mount points" this means it's done

d- REBOOT IMMEDIATELY INTO RECOVERY ( NEVER REBOOT INTO SYSTEM TELL YOU END STEP3 )

STEP3: a- In TWRP, wipe all except internal storage and microSD

b- power off your phone after the wipe ( if TWRP asked to install SuperSU, refuse )

c- Open in download mode

d- In Odin, Load the pit file of your phone ( search google for one if you doesn't have any ) then load the stock in AP ( mine is COJ5 Brasil VIVO ). Check "Repartition" then Start.

CONGRATS ,YOU'RE NOW ON STOCK

Unfortunately , Your IMEI now isn't the one your phone really has, so you're not registered on a network. Don't Panic We're going to solve it . "

now this is how I fixed my IMEI:

1- Copy the backup of cyanogen to pc, and use ext4 unpacker to open efs1.emmc.win of your cyanogen backup

2- look for the following files: "imei folder, .nv_data.bak (notice the dot)" and extract them to a folder you create

3- copy that folder to phone, and install root browser

4- remove EFS folder and reboot

5- enter efs folder and remove the "imei folder and nv_data.bin)

6- copy the ".nv_data.bak" from the folder you created earlier, two times. the first time name the file as "nv_data.bin" and the second is "nv_data.bin.bak" and then copy imei folder

phone will reboot in few seconds automatically and you'll find imei to be working again for some reason.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
then you are good to go, double check you are typing the correct directory its: mke2fs /dev/block/mmcblk0p3
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
/root # mke2fs /dev/block/mmcblk0p3: not found
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
oh man sorry for my ignorance, i missed the space between mke2fs_/block haha phone is rebooting now i now need the signal back and all good to go, im so grateful to you man thanks a bunch

---------- Post added at 11:14 AM ---------- Previous post was at 11:12 AM ----------

damn im having a bootloop at the samsung logo...
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Did you follow exactly the odin procedures? Since you wiped successfully the efs you shouldn't get bootloop after proper odin flash.

---------- Post added at 01:24 PM ---------- Previous post was at 01:21 PM ----------

Don't select /root directory but /

Also what TWRP version do you have?
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
I just realized that I didnt notice the space in the command and when I typed it like I should the phone just went off. Is that good? And should I wipe everything before flashing the stock rom?
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
i just factory reset in stock recovery and all boot up, now can you give me easiest way to solve newtwork i have back up my cm13 rom already 10 times lol, btw i need to root again my stock 5.1.1 right?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Mine was not went off. I don't know why that happened to you. Try once more to do it and/or boot to cm13 if you can just to check if your network is disabled (just call a number). Wipe everything (except external sdcard) is a good move as always :)

---------- Post added at 01:36 PM ---------- Previous post was at 01:34 PM ----------

Yes, use odin to flash the cf-root image and TWRP.
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
i did not do any wipe just input the command to format efs the go to download mode and flash pit file ang stock rom, i think there is no need to wipe cus using odin all will be deleted
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
My network doesnt work on the stock rom and I only have backups of .nv_data.bak and imei. What should I do? The tutorial [n910c] go back to stock rom from cm13. [bootloop/ imei/network problem fixed 100%] does not work for me.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
It should work, double check the procedure. Do you have an efs professional backup maybe? I've just extracted the efs.img from the backup and write it in the mmcblk0p3 partition with commands.
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
Can you explain how to write the efs from CM13 to stock with commands?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
I've posted already the guide here just to make these threads more clear: http://xdaforums.com/note-4/help/guide-format-efs-folder-efs-t3329250

Keep in mind that i had back up the efs when i was in lollipop. I wouldn't recommend to restore a cm13 backup to efs as it probably result to bootloops again.
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
Well I dont have efs professional backup so I can say goodbye to my phone...
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
you did not back up your previous rom cm13?

---------- Post added at 12:28 PM ---------- Previous post was at 12:26 PM ----------

hi mate, i already installed the 5..1.1 rom and also followed the guide on network fix but still get emergency calls only, can you guide me to your own process of restoring your network, thanks
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Calm down, since you have the IMEI files you are safe. Make sure you do the procedure correctly and GIVE APPROPRIATE PERMISSIONS to the files you restored.

Check my thread for the correct permissions
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
Update: I fixed everything and my network is working. I am really sorry for bothering you with my newbie questions. Thank you for your patience and quick replies. :D
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
Thanks, i'm glad i helped you and you have your phone back in life ;)
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
Hey bro, what procedures you do to back to 5.1.1 ? I'm still on CM13 and i can't do anything and i dont have IMEI Backup for 5.1.1 :(

*Note : My problem is only to restore the imei, i can't open the EFS with ext4unpacker and i can't do anything. Only a working 5.1.1 but shown Emergency Call
[Galaxy Note 4 Q&A, Help & Troubleshooting] chagasmata:
Help me please!

Hello FR34K-B1B0, my name is Luiz. I'm from Brazil.

I have this problem, failing to return to rom stock after installing CM13. I followed all yours instructions. However, after step 3d, the phone does not start, getting that infinite loop of Samsung's startup screen. I do not know what else to do. Forgiveness for my English. I'm using google translator. Can you help me? I would be eternally grateful. Thank you. Awaiting return.

Luis, Rio de Janeiro, Brazil.
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
http://xdaforums.com/note-4/help/n910c-to-stock-rom-cm13-t3321132

Follow this thread from step to step and read carefully!
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
I'll ready do that but when i restore the imei i got bootloop again or open the imei folder / copy it, my phone going to reboot.
[Galaxy Note 4 Q&A, Help & Troubleshooting] J.jakov:
Did you format your efs folder correctly thru EFS Professional with no errors?
[Galaxy Note 4 Q&A, Help & Troubleshooting] karltabby:
hi man, i cant thank you enough, i finally restored to stock rom, you're guide help me out so much im so grateful to you, now im gonna flash again for stock 5.1.1 no roort to receive official updates, thanks again man.
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
Everything is correct and no sign of errors
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
that means you didn't follow the guide correctly
[Galaxy Note 4 Q&A, Help & Troubleshooting] franky_tamayo:
Hi, this problem you had is exactly whats happening to me, i end up in infinite bootloop.

i flashed like 5 different offical stock roms from sammobile for my device, all being 4 file roms, pit, bl, etc. etc., but i cant get past bootloop; i've also tried single file stock roms, nothing.

i get the message installing system update and then erasing as well... i read you flashed the stock BL too, as i have had; i've used differnt Odins, different cables, different usb ports, different computers, and runing out of ideas, besides waitting for a stock 6.0 android to come out and flash, but i cant be without a phone forever long that is... any suggestions or pointers what else you guys thinks i should try...

Greetings from Tijuana Mexico, first time writer, long time XDA follower, all you guys are the best!

Thanks in advance!!!

i must add, that this thread was created way after i got my self in to the ****.

i flashed the CM13 Rom and tried to downgrade and miserably failed.

i do have a EFS backup, but thats all, i dont have currently (nor by the time a read this thread) a working ROM to follow the guide to the letter.
[Galaxy Note 4 Q&A, Help & Troubleshooting] franky_tamayo:
- - - - - - -

keep trying man, probably something miraculously happen... (your voice within)...

chirp chirp... (cricket in the dark emptiness)... LoL.

Thanks! man, you are the best :D
[Galaxy Note 4 Q&A, Help & Troubleshooting] leepc:
at your step 5),

the EFS partition on my n910T is pointed to mmcblk0p13. and the SBL is pointed to mmcblk0p3.

So you want to format EFS or SBL ?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sectoras:
You should format EFS, i thought all Note 4 devices had the EFS partition pointed to blk0p3 like my N910C. So thanks for pointing that out.
[Galaxy Note 4 Q&A, Help & Troubleshooting] kingwicked:
Solution for Those Only Who have a TWRP Backup of Sixperience ROM and still the Phone doesnot Get out of Bootloop

I had flashed CM13 and was stuck in bootloop for 20 minutes even after restoring Touchwizard Sixperience 6.0 Rom Backup

The thing that worked for me , i had xposed framwork installed in the sixperience backup. I returned back to TWRP and flashed xposed uninstaller zip and rebooted the phone

The phone booted back on My Sixperience Rom Backup. I again flashed back xposed framework and it also works fine

i am surprised that what is the link of xposed framework with bootloop once i flashed back from CM13

never have had this problem on touchwiz rom to tw rom restores back on phone
[Galaxy Note 4 Q&A, Help & Troubleshooting] franky_tamayo:
- - - - - -

Thank you bro, after 3 weeks of trying everything within my knowledge i restored my phone, following your steps.

still have to restore IMEI and such but my phone is finally back alive!!! :D

THANK YOU!!!

greetings from Tijuana Mexico!
[Galaxy Note 4 Q&A, Help & Troubleshooting] white7561:
After this. Are gyroscope is calibrated right and Bluetooth working? Cuz the Bluetooth address and gyroscope are on another file at /efs
[Galaxy Note 4 Q&A, Help & Troubleshooting] Maufeat:
ext4_unpacker crashes as soon as I try to open the efs1 backup file. Any solutions?
[Galaxy Note 4 Q&A, Help & Troubleshooting] AlStarsKyz:
Same, cant open the efs file on ext4unpacker. I just waiting someone help me :((
[Galaxy Note 4 Q&A, Help & Troubleshooting] Sentenz@74:
Same here. But I first i try with another rom and then try original firmware with odin. I think now i'm not root (?). The only backups I have done just after the root via TWRP (all with efs and data separately).

What to do before start the steps?
[Galaxy Note 4 Q&A, Help & Troubleshooting] rooter_aaqi:
What If we didnt't backup EFS..??

How to restore efs if we didn't backup it before..??

I m having the same problem, was downgrading the phone to 4.4.4 stock from 5.1 stock using repair firmwares, after flashing phone wont bootup nd in recovery it says dm-verity verification failed..

Help Me I m Stucked..
[Galaxy Note 4 Q&A, Help & Troubleshooting] kazama99:
error

pls help me i get mke2fs /dev/block/mmcblk0p3:not found,what shpuld i do ?
[Galaxy Note 4 Q&A, Help & Troubleshooting] Rampargo:
when I use ext4unpacker, I always get an error for List out of bounds no matter what. I've tried it on win7 and win10, both in admin mode and out. i've also tried ext2explorer but nothing works...
[Galaxy Note 4 Q&A, Help & Troubleshooting] Uzeer_nabeel:
Only Thing which is not working is the Ext4 Unpacker always says out of bounds(error 5120) I have tried on different pc but same thing. Please help me with this situation. thank you

---------- Post added at 03:39 PM ---------- Previous post was at 03:26 PM ----------

I did got to the Stock but I cannot extract the efs1.emmc.win with Ext4 unpacker it gives me the error saying list out of bounds(5120). I tried doing it on different computer but same thing cannot extract the efs1.emmc.win file. Please help me how to extract the file Thank you.
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
this method probably works with stock lollipop and CM13, as EFS backup from stock MM crashes EXT-4 unpacker
[Galaxy Note 4 Q&A, Help & Troubleshooting] Uzeer_nabeel:
Everything is going well except the efs1.emmc.win of cm13 does not open in ext4unpacker please help
[Galaxy Note 4 Q&A, Help & Troubleshooting] Uzeer_nabeel:
I am trying to open cm13 backed up efs1.emmc.win file with ext4unpacker but it always says list out of bound error 5120. Please help me. I really appreciate that.
[Galaxy Note 4 Q&A, Help & Troubleshooting] FR34K-B1B0:
Sorry, i don't log in to xda that much

Try this

http://xdaforums.com/showpost.php?p=64510905&postcount=18
[Galaxy Note 4 Q&A, Help & Troubleshooting] andr3wchong:
Thanks TS , finally fixed my boot loop , wasable to flash stock and custom Touchwiz based roms...

but the invalid / no network doesn't work :D , still have no carrier :D
[Xperia Z3 Q&A, Help & Troubleshooting] yamato2012:
My phone D6603 no operate cause from motherboard broken. To repair got new motherboard from internet but

this motherboard never flash any ROM ( it mean no custom ROM, NO EMEI, NO bluetooth &MAC address),

So as above condition I would like to get help what I have to do to recovery my phone.
[LG G Flex 2] jgolf:
Is there any way to change the default lock-screen date/clock widget? Can it be changed to a different style or different font size, or removed? I have the AT&T model. Not rooted or modded. Just stock since I've had it. Thanks.
[LG G Flex 2] copy2050:
no, even with root isnt possible to do that so without root is even more impossible! forget about that...wait for MM update, the clock will change to flat without that circle.
[LG G Flex 2] jgolf:
Thank you very much!!!
[LG G Flex 2] Mr.Nice.ba:
You can disable LG lockscreen in settings menu and instal another lockscreen from play store. I am using AcDisplay and it is much better than default and looks very minimalistic...
[LG G Flex 2] jgolf:
How do you disable lockscreen. Do you mean Setting > Display > Lock screen , and then disabling PIN? That kills Android Pay for me, so it's not an option. (Android Pay requires PIN). Nonetheless, It's still good to know, thank you!
[Galaxy Tab S2 Q&A, Help & Troubleshooting] Lexuzz89:
Can anybody tell me please how to reboot from download mode without flashing any software? I would checked how it looks like in comparison to my Note 4 and now I want to reboot it. When I hold the power button (like the Note 4, S5 or s4) the tab do nothing! Please help me!!
[Galaxy Tab S2 Q&A, Help & Troubleshooting] Lexuzz89:
Aaah damn it! Any device has a different way :D

I had to push the power button + volume down and home button (the same way how you come to download mode) and than it starts again to ask you what you would like to do... Than you have to klick on "reboot device"

It can be so easy :P
[Galaxy Tab S2 Q&A, Help & Troubleshooting] ashyx:
power + vol down
[Zuk Z1 Q&A, Help & Troubleshooting] Angelo_13:
Which apps support the Lenovo Zuk Z1 fingerprint scanner?
[Zuk Z1 Q&A, Help & Troubleshooting] Tengo10:
I'm only using the telegram messenger which supports fingerprint lock